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Model
V/E-40
Strain Gage Simulator  

  
   

 

Description
The V/E-40 Strain Gage Simulator is an accurate, stable, compact, five-decade resistor specially designed to simulate the behavior of strain gages and RTD'S, and for use in a broad range of measurement and calibration applications.

As a precision strain gage simulator, the V/E-40 can be used to measure nonlinearity of the instrumentation in quarter-bridge operation, or to verify instrument calibration over the anticipated measurement range. It is also well-suited to measuring desensitization of the strain gage circuit due to the finite resistance of the strain gage leadwire system.

In a similar manner, the V/E-40 can be temporarily substituted for an RTD over a resistance range of 30.00 to 1111.10 ohms to verify calibration of temperature measurement instrumentation.

The V/E-40 can also be used in conjunction with a conventional Wheatstone bridge strain indicator to measure arbitrary resistances between 30.00 and 1111.10 ohms, or to eliminate Wheatstone bridge nonlinearity effects when measuring high post-yield strains in quarter-bridge operation. In this mode, the resistance or strain gage to be measured is connected as one arm of a Wheatstone bridge, the V/E-40 is used as a decade resistor in an adjacent arm, and the strain measuring instrument as a null detector.

Other applications include use as an investigative tool to troubleshoot faulty strain gage installations, or as a precision decade resistor.

  • Features
  • 5 Decade Selector Switches
  • Resistance Range: 30.00 to 1111.10 ohms in 0.01 ohm steps
  • High Precision Vishay Resistors used throughout to ensure Excellent Stability
  • Accuracy 0.02% of Setting
  • Simulates Tension and Compression Strain for most widely used Strain Gage Resistance Values
  • Simulates a Broad Range of RTD's for Instrumentation Setup and Calibration
     

Specifications
All specifications nominal or typical at +23 deg C unless noted.

Accuracy:
0.02% of reading.

Maximum Current (To meet accuracy and repeatability specifications.):
120 ohms: 65 mA;
350 ohms: 55 mA;
1000 ohms: 25 mA.

Stability:
+ 3 ppm/deg C max.

Resistance Range:
30.00 to 1111.10 ohms in 0.01 ohm steps.

Environment:
0 deg to +120 deg F (-18 deg to +49 deg C), up to 70% relative humidity, non-condensing.

Size:
3-7/8 H x 9-1/8 W x 3-1/8 D in (98 x 232 x 89 mm).

Weight:
1.9 pounds (0.85 kg).